Seltrade offers R-403B refrigerant gas, a high-performance HCFC blend specifically developed to retrofit low-temperature refrigeration systems originally operating on R-13B1 or R-503. Designed for ultra-low temperature applications, R-403B refrigerant gas is ideal for laboratory freezers, pharmaceutical cold storage, medical refrigeration units, and other specialized freezing environments.

Key Features

Effective R-13B1 & R-503 Retrofit: R-403B is engineered to closely match the operating characteristics of R-13B1 and R-503, making it a reliable retrofit option for ultra-low temperature systems while maintaining similar performance and cooling capacity.

Ultra-Low Temperature Capability:R-403B refrigerant gas is designed to operate efficiently in systems requiring extremely low evaporator temperatures, reaching down to -40°F and beyond—perfect for sensitive storage and industrial freezing applications.

Oil Compatibility:R-403B is generally compatible with traditional mineral oils in systems originally charged with R-13B1. However, switching to synthetic oils such as alkylbenzene (AB) or polyolester (POE) may enhance performance, especially in critical applications.

Moderate Temperature Glide:With a temperature glide of approximately 11°F, R-403B requires careful system tuning to optimize thermal exchange and ensure consistent performance across the evaporator.